2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/3898We show, that different types of isolated neutron stars (INSs) show evidence in favor of magnetic field decay in these objects, and discuss how observations of INSs can help to constrain models of field decay.3 pages, no figures, to appear in proceedings of the conference Variable Stars - 2001 in Odessa Astron. PublAstrophysicstext